Perhaps you should try some spelling variations:
ec communication » de communication, 3 communication, 4 communication
technologien ad » technologien am, technologien und, technologien als
information 1.2 » information 1.5.2, information 2
ad information » d information, nd information, od information
3.2 developing » 3.3 developing, 2.2 developing, 3 developing
costs 3.2 » costs 4.2, cost 3.2, costs 3.5
1.2 book » 1.4 book, 1.5 book, 1.6 book
book ec » book c, book end

You may be able to get more results by adjusting your search query.

• Adding a wildcard symbol may retrieve word variants: technologien ad information 1.2 book ec communication costs 3.2 developing _ areas.*.